Patterson-Kelley MACH-05 manual 5.0MAINTENANCE, Weekly, Monthly During Operation, Daily

MACH® Series Gas-Fired Boiler Maintenance

5.0MAINTENANCE

5.1MAINTENANCE AND INSPECTION SCHEDULE

WARNING!

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

WARNING!

Use care when reassembling main gas line to assure all connections are tight.

WARNING!

Use care when servicing boiler in order to prevent the accumulation of gas in or around the combustion chamber.

WARNING!

General lockout/ tagout procedure must be employed when servicing this unit.

WARNING!

Determine the cause of the lockout before resetting the boiler. If able to determine cause of lockout, then appropriate corrective action should be taken. If not able to determine cause of the problem, call a qualified service technician.

Verify proper operation after servicing.

WARNING!

Check daily to be sure that the boiler area is free and clear of any combustible materials, including flammable vapors and liquids.

5.1.2 Weekly

Observe the conditions of the main flame. A normal high fire flame is blue. If the high fire flame is yellow then corrective action must be taken. In normal low fire the burner will glow a yellowish-orange.

Correct air adjustment is essential to the efficient operation of this boiler. If an adjustment in the combustion is necessary, the flue gas composition should be checked with a carbon dioxide (CO2) or oxygen (O2) analyzer to set conditions. Refer to Table 3-1, Section 3.12.4 for proper combustion readings.

5.1.3 Monthly (During Operation)

1.Test flame detection by voltage reading at the terminal strip (Terminal 9 on TB-1 and ground screw). The voltage reading should be between (5 and 10 VDC).

2.Test high-limit Control. Refer to Section 3.11.3.

3.Test operating temperature controls by reducing or increasing temperature setting as necessary to check burner operation.

4.Test the low water level cut-out. Refer to Section 3.11.2.

5.Test low gas pressure switch. Refer to Section 3.11.4.

6.Check the condensate drain system. Clean and flush as necessary.

5.1.1 Daily

Observe operating temperature and general conditions. Make sure that the flow of combustion and ventilating air to the boiler is not obstructed. Determine the cause of any service codes or lockouts on the display panel.

Observe any unusual noises or operating conditions and make the necessary corrections. Notify responsible individuals for required corrective action or repair.

Installation and service must be performed by a qualified installer or service agency who has been trained on the Patterson-Kelley MACH boiler.

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